On Sat, Mar 5, 2016 at 9:22 PM, Stephan Beal <sgbeal at googlemail.com> wrote:
> Aggregates are _currently_ modeled as a single function which gets called > just like normal function, but in the aggregate's "final" call the engine > calls the aggregate function with no arguments (this is how the call knows > it's the "final" one). > Follow-up, for anyone searching the archives later: select myaggregate(*) from t; indeed makes all calls to the aggregate without any arguments, so the no-arguments heuristic to recognize the final call isn't useful. In my case i'm solving it by setting a flag on the callback function instance itself when making the final call, so that the callback can behave appropriately. Thank you Richard and R. Smith for the confirmations! -- ----- stephan beal http://wanderinghorse.net/home/stephan/ http://gplus.to/sgbeal "Freedom is sloppy. But since tyranny's the only guaranteed byproduct of those who insist on a perfect world, freedom will have to do." -- Bigby Wolf
